Question

The focal length of a biconvex lens of refractive index is 40 cm. When immersed in a liquid of refractive index its focal length in meters will be :

A

B

C

D

Medium
Updated on : 2022-09-05
Solution
verified
Verified by Toppr
Correct option is C)

Using lens makers formula and taking the ratio for the two cases,



Solve any question of Ray Optics and Optical Instrument with:-
Was this answer helpful?
upvote 0
downvote0
Similar questionsstar-struck